What Is Egg White?
Egg white is the part surrounding the yolk, clear and gelatinous when raw and turning white when cooked. It consists mostly of water and protein, and contains no fat or cholesterol.
When whipped, it traps air, increases in volume, and forms a foamy, snow-like texture; this makes it an important ingredient in meringues, soufflés, and light cakes. It is also often used separated from the yolk.
Nutritional Values of Egg White
With about 52 kcal per 100 grams, egg white is low in calories, nearly fat-free, and rich in protein (about 11 g); it contains no cholesterol. For this reason, it may be preferred by people who want to limit fat and cholesterol.
How Should Egg White Be Consumed?
Egg white can be part of a balanced diet because it is lean and rich in protein; however, like any egg product, it carries a risk of salmonella when eaten raw, so it should be thoroughly cooked. Pasteurized egg white products are also available.
This information is general; egg white is a food and is not a substitute for medical treatment.
How to Separate and Choose Egg White
The white of a fresh egg is firm, gelatinous, and clear; using fresh eggs is important for separating it cleanly from the yolk. Egg whites that have become watery, smell spoiled, or contain yolk may be difficult to whip into a good foam.
- The white of a fresh egg should be firm and clear
- No yolk or fat should be mixed in
- The mixing bowl should be clean and grease-free
How to Store Egg White
Separated egg whites can be stored for a few days in a sealed container in the refrigerator; they can also be frozen for longer storage. Thaw them thoroughly before use and check that they are still fresh.
Using Egg White in the Kitchen
Egg white is used most often in meringues, soufflés, light cakes, some doughs, and foamy desserts; it is also used as a lighter option in omelets and menemen. To whip it well, use a clean, grease-free bowl and usually add a pinch of salt or lemon.
Why Does Egg White Foam?
The proteins in egg white trap and stabilize air bubbles during whipping; this allows the whites to expand and form a snowy foam. Fat and yolk can interfere with foaming.
Frequently Asked Questions
Can egg white be eaten raw?
It is not recommended because raw consumption carries a risk of salmonella; thoroughly cooking it or using a pasteurized product is safe.
Why didn’t the egg whites foam?
Fat or yolk in the bowl or whites prevents foaming; clean, grease-free equipment and whites without any yolk mixed in produce better foam.
Can egg whites be frozen?
Yes; separated egg whites can be frozen for storage and used after thawing. This is a practical way to use leftover whites.